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https://www.readbyqxmd.com/read/29456898/passive-radar-for-opportunistic-monitoring-in-e-health-applications
#1
Wenda Li, Bo Tan, Robert Piechocki
This paper proposes a passive Doppler radar as a non-contact sensing method to capture human body movements, recognize respiration, and physical activities in e-Health applications. The system uses existing in-home wireless signal as the source to interpret human activity. This paper shows that passive radar is a novel solution for multiple healthcare applications which complements traditional smart home sensor systems. An innovative two-stage signal processing framework is outlined to enable the multi-purpose monitoring function...
2018: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29401129/early-ambulation-after-microsurgical-reconstruction-of-the-lower-extremity
#2
Michael J Orseck, Christopher Robert Smith, Sean Kirby, Manuel Trujillo
Successful outcomes after microsurgical reconstruction of the lower extremity include timely return to ambulation. Some combination of physical examination, ViOptix tissue oxygen saturation monitoring, and the implantable venous Doppler have shown promise in increasing sensitivity of current flap monitoring. We have incorporated this system into our postoperative monitoring protocol in an effort to initiate earlier dependency protocols. A prospective analysis of 36 anterolateral thigh free flap and radial forearm flaps for lower extremity reconstruction was performed...
February 2, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29399435/stimuli-disassembling-gold-nanoclusters-for-diagnosis-of-early-stage-oral-cancer-by-optical-coherence-tomography
#3
Chang Soo Kim, Dominique Ingato, Petra Wilder-Smith, Zhongping Chen, Young Jik Kwon
A key design consideration in developing contrast agents is obtaining distinct, multiple signal changes in diseased tissue. Plasmonic gold nanoparticles (Au NPs) have been developed as contrast agents due to their strong surface plasmon resonance (SPR). This study aims to demonstrate that stimuli-responsive plasmonic Au nanoclusters (Au NCs) can be used as a contrast agent for optical coherence tomography (OCT) in detecting early-stage cancer. Au NPs were clustered via acid-cleavable linkers to synthesize Au NCs that disassemble under mildly acidic conditions into individual Au NPs, simultaneously diminishing SPR effect (quantified by scattering intensity) and increasing Brownian motion (quantified by Doppler variance)...
2018: Nano Convergence
https://www.readbyqxmd.com/read/29389904/random-access-for-underwater-acoustic-cellular-systems
#4
Rothna Pec, Mohammed Saquib Khan, Muhammad Asim, Yong Soo Cho
In this paper, a random access preamble (RAP) design technique for underwater acoustic cellular systems is proposed. After showing that the conventional RAP used in long term evolution (LTE) systems is not appropriate for underwater acoustic cellular systems, two different types of RAPs (RAP 1 and RAP 2) are proposed to detect the identity of underwater equipment/nodes (UEs) and estimate the time delay between a UE and an underwater base station (UBS) at the physical layer. RAP 1 is generated using a Zadoff-Chu (ZC) sequence where the identity of the UE is mapped to its root index, whereas RAP 2 is generated using a linear frequency modulation (LFM) waveform where the identity of the UE is mapped to its frequency sweeping parameter and frequency shifting parameter...
February 1, 2018: Sensors
https://www.readbyqxmd.com/read/29383260/penile-mondor-s-disease-in-a-patient-treated-with-radical-chemoradiation-for-anal-cancer
#5
Maria Pittaka, Eleni Fotiou, Margarita Dionysiou, Petros Polyviou, Eleni Eracleous, Demetris Andreopoulos, Vassilios P Vassiliou
Penile Mondor's disease is a rare condition characterized by sclerosing thrombophlebitis of the superficial dorsal penile vein. Usually its causes are benign, but it is also evident in cancer patients. We report the case of a 62-year-old man with a cT4 anal cancer (infiltration of corpora spongiosa and penile bulb), associated with extensive loco-regional lymphadenopathy, who developed painful lumps in the midline of the anterior penile surface while receiving radical chemoradiotherapy. Physical examination revealed two palpable cord-like swellings located 2 cm from the pubic symphysis...
August 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/29376968/-the-non-medicamentous-methods-for-the-prevention-and-treatment-of-the-patients-presenting-with-neurocirculatory-asthenia-and-concomitant-enhanced-meteosensitivity
#6
A I Uyanaeva, Y Y Tupitsyna, E A Turova, N V Lvova, I V Ksenofontova
OBJECTIVE: The relevance of the problem stated in the title of this article comes from the significant increase in the prevalence of the functional cardiovascular disorders having been documented during the past years especially such as circulatory asthenia that most frequently affects the young people of the working age suffering from the systemic neurogenic imbalance in the organism and can be seriously aggravated by the influence of biotropic weather conditions and be responsible for enhanced meteosensitivity that has negative effect on the quality of life and impairs the effectiveness of the therapeutic interventions...
December 5, 2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29374645/spontaneous-calf-haematoma-in-severe-dengue
#7
Ahmad Mursel Anam, Raihan Rabbani, Farzana Shumy
We report a case of spontaneous calf muscle haematoma, formed during the recovery phase of dengue haemorrhagic fever, which, to the best of our knowledge, has never been encountered before. A 45-year-old man presented with features of severe dengue and got admitted to our intensive care unit. He was treated with intravenous fluid therapy and supportive measures, and gradually improved, initially. However, during the recovery phase, he suddenly developed painful left calf, which was found tender, hot and swollen on physical examination...
January 26, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29357332/cerebral-blood-flow-and-heart-rate-variability-in-chronic-fatigue-syndrome-a-randomized-cross-over-study
#8
Anneleen Malfliet, Roselien Pas, Raf Brouns, Joris De Win, Samar M Hatem, Mira Meeus, Kelly Ickmans, Robbert-Jan van Hooff, Jo Nijs
BACKGROUND: Pain, fatigue, and concentration difficulties are typical features of chronic fatigue syndrome (CFS). The exact underlying mechanisms of these symptoms are still unknown, but available evidence suggests an important role for impaired pain modulation. As evidence also suggests that pain modulation is related to cardiovascular mechanisms, it seems logical to investigate whether cerebral blood flow (CBF) and heart rate variability (HRV) are altered in these patients. OBJECTIVES: We aimed to investigate the role of the cardiovascular system in pain modulation and symptoms of CFS; the response of CBF and HRV to physical stress and their relation to the change in temporal summation (TS) of pressure pain and self-reported symptoms was evaluated...
January 2018: Pain Physician
https://www.readbyqxmd.com/read/29355580/sitting-time-is-negatively-related-to-microvascular-endothelium-dependent-function-in-rheumatoid-arthritis
#9
Sally Fenton, Aamer Sandoo, George Metsios, Joan Duda, George Kitas, Jet Veldhuijzen van Zanten
BACKGROUND: Sedentary behaviour is linked to increased cardiovascular disease risk in Rheumatoid Arthritis (RA), but the biological processes underlying this relationship are not understood. OBJECTIVES: To investigate the cross-sectional associations of habitual sedentary behaviour, with endothelial function in RA. METHODS: Sixty-eight RA patients (Mage = 55 ± 12 years) underwent Laser Doppler Imaging with iontophoresis, to assess microvascular endothelium-dependent (acetylcholine, ACh) and endothelium-independent (sodium nitroprusside, SNP) function...
January 17, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29350331/motion-deficit-in-nodal-interphalangeal-joint-osteoarthritis-by-digital-goniometer-in-housewives
#10
L Ventura-Ríos, M Hayes-Salinas, D Ferrusquia-Toriz, R I Cariño-Escobar, E Cruz-Arenas, J Gutiérrez-Martínez, L González-Ramírez, C Hernández-Díaz
Range of motion (ROM) measured objectively in nodal hand osteoarthritis (NHOA) is missing. Evaluation of collateral ligaments by ultrasound (US) is unknown in NHOA also. To compare ROM in interphalangeal joints in housewives with nodal OA, with a control group by a digital system using angle to voltage (Multielgon). The second objective was to assess correlation between collateral radial and ulnar ligaments thickness and ROM. For this cross-sectional observational study, we assessed 60 hands with symptomatic NHOA and 30 hands of healthy housewives matched for age...
January 19, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29346297/the-dynamic-performance-of-flexural-ultrasonic-transducers
#11
Andrew Feeney, Lei Kang, George Rowlands, Steve Dixon
Flexural ultrasonic transducers are principally used as proximity sensors and for industrial metrology. Their operation relies on a piezoelectric ceramic to generate a flexing of a metallic membrane, which delivers the ultrasound signal. The performance of flexural ultrasonic transducers has been largely limited to excitation through a short voltage burst signal at a designated mechanical resonance frequency. However, a steady-state amplitude response is not generated instantaneously in a flexural ultrasonic transducer from a drive excitation signal, and differences in the drive characteristics between transmitting and receiving transducers can affect the measured response...
January 18, 2018: Sensors
https://www.readbyqxmd.com/read/29344667/clinical-evaluation-of-covered-stents-in-the-treatment-of-superficial-femoral-artery-pseudoaneurysm-in-drug-abusers
#12
Jian Xu, Zhao Zheng, Yong Yang, Wei Zhang, Hongliang Zhao, Bei E, Minwen Zheng
The present study aimed to investigate the technical feasibility and initial clinical outcomes of a covered stent for the endovascular treatment of superficial femoral artery (SFA) pseudoaneurysm in drug abusers. A total of 29 drug abuse patients with SFA pseudoaneurysm, as confirmed by color Doppler sonography, were enrolled to the present study between January 2012 and May 2014. All patients were treated percutaneously by implantation of a covered stent. Physical examination and lower extremity computed tomography angiography were performed at 1 and 9 months postoperation...
January 15, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29342466/deep-vein-thrombosis-a-rare-cause-of-acute-testicular-pain-case-report-literature-review
#13
Adrián Amador Robayna, Jonathan Rodríguez Talavera, Begoña Ballesta Martínez, Javier Falcón Barroso, Almudena Carrión Valencia, Nuria Orribo Morales, Melania Santacruz Pérez, Jesús Monllor Gisbert
INTRODUCTION: Thrombosis is defined as the formation of a clot in a blood vessel that obstructs the flow of blood to the peripheral tissues. The incidence of thromboembolic disease ranges from 0.7 to 1.2% within urology. CASE REPORT: A 40-year-old warehouse worker male presented to the emergency department with worsening of a month's lasting scrotal pain. Physical examination showed the presence of an enlarged and painful left testicle with no other findings. Right testicle, penis and abdominal examination showed no abnormalities whatsoever...
January 17, 2018: Urologia Internationalis
https://www.readbyqxmd.com/read/29315921/influence-of-physical-inactivity-on-arterial-compliance-during-a-glucose-challenge
#14
Daniel P Credeur, Leryn J Reynolds, Seth W Holwerda, Jennifer R Vranish, Benjamin E Young, Jing Wang, John P Thyfault, Paul J Fadel
Acute hyperglycemia has been shown to augment indices of arterial stiffness in patients with insulin resistance and other co-morbidities, however, conflicting results exist in healthy young individuals. We examined if acute hyperglycemia following an oral glucose tolerance test (OGTT) increases arterial stiffness in healthy active men before, and then after reduced ambulatory physical activity to decrease insulin sensitivity. High-resolution arterial diameter tracings acquired from Doppler-ultrasound allowed the obtainment of an arterial blood pressure (BP) waveform from the diameter tracing within a cardiac cycle...
January 9, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29310672/3d-vena-contracta-area-after-mitraclip%C3%A2-procedure-precise-quantification-of-residual-mitral-regurgitation-and-identification-of-prognostic-information
#15
Alexander Dietl, Christine Prieschenk, Franziska Eckert, Christoph Birner, Andreas Luchner, Lars S Maier, Stefan Buchner
BACKGROUND: Percutaneous mitral valve repair (PMVR) is increasingly performed in patients with severe mitral regurgitation (MR). Post-procedural MR grading is challenging and an unsettled issue. We hypothesised that the direct planimetry of vena contracta area (VCA) by 3D-transoesophageal echocardiography allows quantifying post-procedural MR and implies further prognostic relevance missed by the usual ordinal scale (grade I-IV). METHODS: Based on a single-centre PMVR registry containing 102 patients, the association of VCA reduction and patients' functional capacity measured as six-minute walk distance (6 MW) was evaluated...
January 9, 2018: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/29297976/platelet-responses-to-pharmacological-and-physiological-interventions-in-middle-aged-men-with-different-habitual-physical-activity-levels
#16
M H Lundberg Slingsby, L Gliemann, M Thrane, N Rytter, J Egelund, M V Chan, P C Armstrong, T D Warner, Y Hellsten
The current guidelines following an acute coronary syndrome recommend dual anti-platelet therapy (aspirin plus a P2Y12 antagonist) alongside lifestyle modifications, including more regular physical activity. It is currently unknown if regular exercise affects the pharmacology of dual anti-platelet therapy. AIM: To explore how exercise-induced improvements in vascular and platelet function affect the efficacy of dual anti-platelet therapy, in a cross-sectional study of men with different physical activity level (training status)...
January 3, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29262473/-clinical-challenges-in-the-management-of-catecholaminergic-polymorphic-ventricular-tachycardia-in-children
#17
H Y Ge, X M Li, H Jiang, Y Zhang, H J Liu, X C Zheng, M T Li
Objective: Catecholaminergic polymorphic ventricular tachycardia (CPVT) accounts for up to 10%-15% sudden cardiac death (SCD) in the children and young population. This study aimed to assess the current situation and challenges in CPVT clinical diagnosis. Method: A retrospective review included 11 children (7 male patients) at the First Hospital of Tsinghua University clinically diagnosed with CPVT from June 2014 to July 2017. Each patient was evaluated with detailed history, physical examination, resting 12-lead electrocardiogram(ECG), 24-h Holter, exercise stress test, Doppler echocardiography and genetic test...
December 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29237324/systemic-lupus-erythematosus-arthropathy-the-sonographic-perspective
#18
A Di Matteo, R De Angelis, E Cipolletta, E Filippucci, W Grassi
Background Despite being promising, the use of ultrasound (US) in the assessment of musculoskeletal manifestations of systemic lupus erythematosus (SLE) is still limited. Literature on this topic is scarce and the spectrum and clinical relevance of US abnormalities has not yet been outlined. With this paper, we aim to explore the panel of joint and tendon US findings in a group of SLE patients. Methods Twenty-five consecutive SLE patients, with current or medical history of musculoskeletal symptoms, were studied...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/29230843/cardiac-function-in-paediatric-patients-with-congenital-adrenal-hyperplasia-due-to-21-hydroxylase-deficiency
#19
Christiaan F Mooij, Milanthy S Pourier, Gert Weijers, Chris L de Korte, Zina Fejzic, Hedi L Claahsen-van der Grinten, Livia Kapusta
BACKGROUND: Hyperandrogenism and exogenous glucocorticoid excess may cause unfavourable changes in the cardiovascular risk profile of patients with congenital adrenal hyperplasia (CAH). OBJECTIVE: To evaluate the cardiac function in paediatric patients with CAH. PATIENTS AND METHODS: Twenty-seven paediatric patients with CAH, aged 8-16 years, were evaluated by physical examination, electrocardiogram (ECG), conventional echocardiography, tissue Doppler imaging and two-dimensional (2D) myocardial strain (rate) imaging...
December 11, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29219274/bilateral-testicular-torsion-in-an-adolescent-a-case-with-challenging-diagnosis
#20
L Lorenzo, E Martínez-Cuenca, E Broseta
Bilateral testicular torsion is a very uncommon emergency, with a challenging differential diagnosis. We describe the case of a 15-year-old patient with a left testicular torsion of 48 hours of duration and a sudden onset of right scrotum pain during his stay at the emergency area. Bilateral testicular torsion was diagnosed after repeat physical examination and doppler ultrasound, which had been normal for right testis in a first evaluation. Surgical exploration was performed with orchiectomy in left testis and fixation in right testis...
December 11, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
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